Tungsten
Tungsten is the most widely used of the refractory metals. In wire form, it is essential for the production of lighting products such as wire filament, and other goods where its high temperature properties are of use. Among its properties are a melting point of 3410° C, a low coefficient of thermal expansion and low vapor pressure at elevated temperatures, along with good electrical and thermal conductivity.
Pure tungsten products are widely used for Furnace parts, Semiconductor Base Plates, Components for Electron Tubes, Emission Cathodes for Electron Beam Evaporation, Cathodes and Anodes for Ion Implantation, Tubes / Boats for Sintering of Capacitors, Targets for X-ray Diagnostics, Crucibles, Heating Elements, X-ray Radiation Shielding, Sputtering Targets and Electrodes.
2, Diameter: 2.0-100.0mm
3, Length: 50-1000mm
4, Density: 19.2g/cm3
5, Surface: Sintering surface, Forged surface, Ground surface
2, width×Length: (2.0-100.0mm)×(2.0-100.0mm)
3, High: 50-1000mm
4, Density: 19.2g/cm3
5, Surface: Sintering surface, Forged surface, Ground surface
2, Thickness: 0.02mm-0.20mm;
3, Density: 19.2g/cm3
4, Purity min 99.95%, 99.98% can also be achieved if special demanded.
5, Appearance: Surface can be supplied in a mirror or matte finish dependent upon thickness and width parameters.
2, Grade: W1, W2, WAL1, WAL2, WAL3
3, Density: 19.2g/cm3
4, Purity 99.92%, 99.98% can also be achieved if special demanded.
5, Specific electrical: 0.055 Ohm x mm2/m resistance at 20 °C.
6, Modulus of elasticity: 410 kN/mm2, at 20 °C.
2, Diameter: φ0.4-1.3mm
3, Number of strands: 1-10(strands)
4, Difference between 2 feet (mm): Big heater element: ±2mm; Small heater element: ±1mm
5, Inside diameter tolerance: ±0.3mm
6, According to the samples or drawings of customers
